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Remote Sens. 2013, 5(11), 5620-5641; doi:10.3390/rs5115620

Bilateral Distance Based Filtering for Polarimetric SAR Data

* ,
Department of Signal Theory and Communications (TSC), Technical University of Catalonia (UPC), E-08034 Barcelona, Spain
* Author to whom correspondence should be addressed.
Received: 10 September 2013 / Accepted: 17 October 2013 / Published: 30 October 2013
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This paper introduces a non-linear Polarimetric SAR data filtering approach able to preserve the edges and small details of the data. It is based on exploiting the data locality in both, the spatial and the polarimetric domains, in order to avoid mixing heterogeneous samples of the data. A weighted average is performed over a given window favoring pixel values that are close on both domains. The filtering technique is based on a modified bilateral filtering, which is defined in terms of spatial and polarimetric distances. These distances encapsulate all the knowledge in both domains for an adaptation to the data structure. Finally, the proposed technique is employed to process a real RADARSAT-2 dataset.
Keywords: SAR polarimetry; speckle; filter SAR polarimetry; speckle; filter
This is an open access article distributed under the Creative Commons Attribution License (CC BY) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Alonso-González, A.; López-Martínez, C.; Salembier, P.; Deng, X. Bilateral Distance Based Filtering for Polarimetric SAR Data. Remote Sens. 2013, 5, 5620-5641.

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